Dump-wagon.



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N. 4146. 8 0. E. KAUFMAN.

DUMP WAGON.

APPLICATION FILED JUNE 30. 19 05.

PATENTED JAN. 15, 190i 2 SHEETSSHEET 2.

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CARL E. KAUFMAN, OF ROSEDALE, KANSAS.

DUMP-WAGON.

Specification of Letters Patent.

Patented Jan. 15, 1907.

Application filed June 30,1905. Serial No. 267,782.

To all whom it 771/6111] concern:

Be it known that I, CARL E. KAUFMAN, a citizen of the United States,residing at Rosedale, in the county of VVyandotte and State of Kansas,have invented new and useful Improvements in Dump WVagons, of which thefollowing is a specification.

My invention relates to improvements in dump-wagons.

The object of my invention is to provide a dump wagon having aconstruction by which one person may easily tilt the loaded bed for thepurpose of dumping the load therefrom and then as readily retract thebed to its original horizontal position.

My invention provides a construction in which the bed when tilted forthe purpose of dumping the load will have its center of gravity disposedforward of the rear axle of the wagon, thus preventing when dumping theload lifting of the forward wheels.

My invention provides, further, means by which a crank-shaft rotated inopposite directions on the bed-support carried by the running-gear willalternately and positively move the bed rearwardly and tilt it and thenretract the bed to its original position.

My invention provides, further, a bedsup port carried by therunninggear, a bed movable rearwardly on said support to a certainposition and then pivotally engaging the support so as to be swung to'atilted position thereon, a drum rotatively mounted on the support, andflexible means connected with the drum and with the bed in a manner suchthat when the drum is rotated in one direc tion the bed will be drawnrearwardly and tilted and when the drum is rotated in the oppositedirection the bed will be retracted to its original position.

Other novel features are hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a longitudinal verticalsectional view showing the bed in the tilted position. Fig. 2 is a sideelevation view of the bed and bed-support, the bed being shown in thehorizontal position. Fig. 3 is a top view of the bedsupport, the chainbracket attached to the bed, and the two bearing-plates adapted toengage the fulcrums on the support. Fig. 4 is a top view of one of thebearing-plates and one of the fulcrums and parts connected therewith.Fig. 5 is a vertical section taken on the dotted line a b of Fig. 4.

Similar characters of reference denote similar parts.

1 denotes the bed of the ordinary rectangular form.

2 and 3 denote, respectively, the forward and rear axles of therunning-gear.

4 denotes a horizontal frame supported at its forward and rear ends uponthe axles 2 and 3 and having at its rear end two rollers 5, adapted tosupport the rear end of the bed 1 when the bed is in the horizontalposition. Supported upon the bed-support 4 in front of the rollers 5 aretwo forwardly and downwardly inclined runways 6, adapted to support tworollers 7, rotatively mounted upon the lower side of the bed uponopposite sides thereof. Upon the rear end of the support 4, located oneat each side thereof over the rear axle and adjacent the rollers 5,respectively, are two projections 8, having upper curved peripherieswhich form fulcrums upon which the bed 1 may be tilted. Twobearing-plates 9 are secured upon opposite sides of the bed near thebottom thereof and are provided, respectively, with curved recesses forpivotally engaging with the fulcrums 8 when the bed 1 has been movedrearwardly to a position in which the bearing-plates 9 will strike thefulcrums 8.

Secured upon each side of the support 4 are two forwardly and downwardlyinclined runways 10, supporting, respectively, thereon two rollers 11,mounted upon the forward end of a brace, the rear end of which ispivotally secured to the bed 1. Said brace comprises a transverse rod12, on which are rotatively mounted the rollers 11 and to which aresecured the forward ends, respectively, of two arms 13, the rear ends ofwhich are pivotally connected in any suitable manner to opposite sidesof the bed in front of the bearing-plates 9, respectively. When the saidbrace is moved rearwardly, the bed will be moved therewith to a positionin which the bearing-plates 9 will strike the fulcrum 8, after whichcontinued movement rearwardly of the brace will force the bed to swingupon the fulcrums 8 into-the tilted position shown in Fig. 1.

T o retract the brace, the followingdescribed mechanism is provided:Forward of the fulcrums 8 a transverse drum 14 is rotatively mounted atits ends in the frame 4. One or more chains 15 are connected to the drum14 and to the brace, so that when the drum 14 is rotated in the properdirection the chain or chains 15 are wound thereon. The chains 15 arepreferably secured at their forward ends, one to each arm 13. On theunder side of the bottom of the wagonbed is secured a bracket 16, towhich is secured the rear end of a chain 17, the forward end of which issecured to the drum 14 in a manner such that when the drum is rotated ina direction such that the chains 15 will be unwound the chain 17 will bewound on the drum. Acrank-shaft 18is rotatively mounted parallel withthe drum 14 in the bed-support 4. Rotation is imparted I from thecrank-shaft 18 to the drum 14 by means of a pinion 19, rotatable withthe crankshaft 18 and meshing with a spur gear-wheel 20, mounted on androtatable with the drum 14. Rotation is imparted to the crank-shaft 18by means of a crank-arm 21, secured to one end thereof. Releasable meansfor locking the crank-shaft 18 against rotation in eitherdirectioncomprises the following parts: Secured upon the crank-shaft 18are two ratchet-wheels 22 and 23, respectively, the peripheral teeth ofwhich face in opposite directions. Pivotally mounted upon the bedsupport4, preferably upon a horizontal pin 24,

' providedon the outer side of the bed-support, are two pawls 25 and 26,which engage,

22 and 23. When the pawls 25 and 26 are both engaged with theratchet-wheels 22 and 23, as shown in Figs. 2 and 3, the crank-shaft 18is prevented thereby from rotation in either direction, thus holding thebed 1 against movement from any position in which it may be at suchtime. To limit the rearward tilting of. the bed 1, a hook 27 is mountedupon therod 12 in a position such that it will engage the crank-shaft 18when the rod 12 has been moved rearwardly to a certain position.

When it is desired to dump the load, the pawl 26 is swung so as to clearthe ratchetwheel 23, after which the 'crankarm 21 is turned clockwise,thus rotating the drum 14 through the intermediacy of the shaft 18,pinion 19, and gear 20in a direction such that the chains 15' will bewound upon the drum 14 and at the same time unwinding from the drum thechain 17. By the rearward drawing of the chains 15 as they are woundupon the drum 14 the brace, comprising the arms 13, rollers 11, and rod12, will, with the bed 1, be forced rearwardly until the bearing-plates9, strike the fulcrums 8, the bed in the meantime being supported uponthe rollers 5, 7, and 11. WVhen the bearingplates 9 strike the fulcrums8, continued rotation'of the drum 14 in the same direction will forcethe arms 13 still farther rearwardly and by reason of the bearing-plates9 being against the fulcrums 8 will tilt the bed 1 in the position shownin Fig. 1, in which position the, center of gravity of the load and bedwill be forward of the axle 3, thus preventing upward tilting of theforward wheels, due to the position of the load and bed. In the tiltedposition (shown in Fig. 1) the bed 1, sup port 4, and arms 13 will bepositioned in the form of a triangle, the horizontal base of which willbe the bed-support 4. By with drawing the end-gate 28 at the rear end ofthe bed the load may be dumped from the bed by gravity, after which thepawl 25 may be removed from engagement with the ratchet wheel 22 and acrank-arm rotated in a direction opposite that required for forcing thebed rearward, as hereinbefore described. The rotation of the crank-armwill cause the drum 14 to be rotated, by means of the crankshaft 18 andgears 19 and 20, in a direction such that the chain 17 will be woundupon 1 the pawls 25 and 26 with the ratchet-wheels 22 and 23,respectively.

My invention may be variously modified without departing from itsspirit.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In a dump-wagon, the combination with i I o 5 a bed-support having atits rear end two fulcrums and in front of the fulorums twoforwardly-inclined runways disposed one at,

each side of the support, of a bed movable horizontally rearward on thebed-support to a certain position and provided with means when in saidcertain position for engaging and swinging on said fulcrums to arearwardly-tilted position, a brace pivoted at its rear end to the bed,two rollers mounted on the brace and running on the said runwaysrespectively, a drum rotatively mounted on the bed-support, means forrotating the drum in two directions, releasable means for looking thedrum against rotation in either direc tion, and two chains connected oneto said brace and the other to the bed so as to move the bed in oppositedirections when the chains are properly drawn by the drum, the chainsbeing so connected to the drum that when one is wound thereon the otheris unwound.

2. In a dump-wagon, the combination with the bed-support, of thebedmovable forward and backward thereon, means by which when the bed hasbeen moved rearwardly to a cer- .chain being comiected to the bed formoving it forward, and the other chain being connected to the brace forforcing the brace and bed rearwardly, a crank-shaft mounted on thebed-support, two ratchet-wheels mounted on the crank-shaft and havingtheir teeth facing in opposite directions, two pawls pivoted to thebed-support and engaging respectively said ratchet-wheels, and gearingfor imparting rotation from the crank-shaft to the drum.

3. In a dump-wagon, the combination with the bed-support having runwaysinclining forward, of the bed movable forward and backward on thesupport, means by which when the bed has been moved rearwardly to acertain position it may be rearwardly tilted on the support, a bracehaving rollers mounted on its forward end, the rollers being supportedon said runways, said brace being pivoted to the bed at the rear end ofthe brace, the bed, brace and bed-support forming a triangle with thebed-support as a base when the bed is in the tilted position, a drumrotatively mounted on the bed-support, two chains connected to the drumso that one will be wound thereon when the other unwinds therefrom, thechains being connected one to the brace and the other to the bed foralternately moving the bed forward and backward and means for rotatingthe drum in both directions.

4. In a dump-wagon, the combination with the bed-support, having twopairs of forwardly and downwardly inclined runways, and, two rollerslocated to the rear of said runways, of the bed supported at its rearend when in the horizontal position upon said rollers and having tworollers adapted to rest upon one pair of runways when the bed is in thehorizontal position, means by which, when the bed is moved rearwardly toa certain position it will pivotally engage said support, a bracepivoted at its rear end to the wagon-bed and having at its forward endrollers mounted on the other pair of runways, means connected with thebed-support and said brace for forcing the brace rearwardly togetherwith the bed until the bed has pivotally engaged the support, and thenforcing the bed to swing into a tilted position, and means by which,when said brace-moving means is reversed in operation, the bed will beretracted to its original position.

5. In a dump-wagon, the combination with a bed-support, of a bed movablerearwardly thereon, means by which, when the bed has been movedrearwardly to a certain position, it will pivotally engage the support,two chains movable simultaneously lengthwise of the support in oppositedirections, means mounted on the support for so moving said chains,onechain being connected with the wagon-bed for drawing the bed forward onthe support, and a brace connected to the other chain and rearwardlydrawn thereby, the rear end of said brace being pivotally connected tothe wagon-bed and the forward end of the brace movable forward andbackward on said support, the arrangement of the parts being such thatwhen the chain connected to the brace is drawn rearwardly the bed willbe moved rearwardly into pivotal engagement with the support and thenswung thereon into a tilted position, and when the chain-drawing meansis oppositely operated, the bed will be retracted by the chain connectedwith it to its original horizontalposition on the support, after it hasbeen swung downward from its tilted position.

6. In a dump-wagon, the combination with the two aXles, of the bed-suport mounted thereon, means by which wlien the bed is rearwardly movedto a certain position on the bed-support it will pivotally engage andmay be swung thereon to a tilted position, a brace pivoted at its rearend to the bed at a point in front of the place of pivotal engagement ofthe bed with the bed-support, the forward end of the brace being movablelengthwise upon and supported by the bed,

support, a drum rotatively mounted on the bed-support, means forrotating the drum in two directions, means by which when the drum isrotated in 'one direction the brace will be forced rearwardly until thebed pivotally engages the bed-support and then forced to a position inwhich the bed will be tilted, the arrangement of the parts being suchthat when the bed is in the tilted position it will be supported whollyby the bed-support, and means by which when the drum is reverselyrotated, the bed may be retracted to its original position.

7. In a dump-wagon, the combination with the two axles, of the bed-suport mounted thereon, means by which w en the bed is rearwardly moved itwill pivotally engage the bed-support and may then be swung thereon to atilted position, a brace pivoted at its rear end to the bed in front ofwhere the bed pivotally enga es the bed-support, the forward end of therace being movable lengthwise upon and supported by the bedsupport, adrum rotatively mounted on the bed-support, two chains adapted to bewound on the drum, one being wound while the other is unwinding, onechain being connected to the bed and the other to the brace in a mannersuch that when the drum is'turned in In testimony whereof I affix mysignature in presence of two subscribing witnesses.

CARL E. KAUFMAN.

one direction the bed will be forced rear wardly and tilted on thesupport and when the drum is oppositely turned, the bed will beretracted, the arrangement of the parts being 1 such that when the bedis in the tilted posil tion it will be supported wholly by thebedsupport.

Witnesses:

WARREN D. HoUsE, HENRY F. RosE.

